340672857 has 16 divisors (see below), whose sum is σ = 535867392. Its totient is φ = 188390160.

The previous prime is 340672847. The next prime is 340672883. The reversal of 340672857 is 758276043.

It is not a de Polignac number, because 340672857 - 2⁴ = 340672841 is a prime.

It is not an unprimeable number, because it can be changed into a prime (340672807) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 261003 + ... + 262304.

It is an arithmetic number, because the mean of its divisors is an integer number (33491712).

Almost surely, 2^340672857 is an apocalyptic number.

It is an amenable number.

340672857 is a deficient number, since it is larger than the sum of its proper divisors (195194535).

340672857 is a wasteful number, since it uses less digits than its factorization.

340672857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 523348.

The product of its (nonzero) digits is 282240, while the sum is 42.

The square root of 340672857 is about 18457.3252937689. The cubic root of 340672857 is about 698.4133157169.

The spelling of 340672857 in words is "three hundred forty million, six hundred seventy-two thousand, eight hundred fifty-seven".